Blue Ph Scale Litmus Paper

Litmus paper comes as red litmus paper and blue litmus paper.

Blue ph scale litmus paper.

Initially litmus paper is either red or blue. Red litmus paper turns blue if it comes in contact with a base alternatively blue litmus paper turns red with acids. Sulfuric acid is obviously acidic in nature. Blue litmus paper can indicate an acid with a ph between 4 and 5 or lower.

It turns blue litmus paper red. The blue paper changes to red indicating acidity somewhere between the ph range of 4 5 to 8 3. Distilled water has a ph of 7 so it is neutral. Red litmus paper is meant to test only for an alkaline ph level.

Neutral solutions do not cause a change of color although there are some brands of blue litmus paper that will turn purple if the substance is neutral. Examples of litmus paper color changes. It turns red litmus. Red litmus paper can show a base with a ph greater than 8.

The main use of litmus is to test whether a solution is acidic or basic blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic or alkaline conditions with the color change occurring over the ph range 4 5 8 3 at 25 c 77 f. Common acids include include tartar sauce corn bacon and beer. Litmus paper color chart. Sodium hydroxide is a base.

To test the ph of a substance dip a strip of litmus paper into the solution or use a dropper or pipette to drip a small amount of solution onto the litmus paper. Note that 8 3 is alkaline red litmus paper can indicate alkalinity with a change to blue. If it comes in contact with an acidic or neutral substance it will remain red. In general litmus paper is red below a ph of 4 5 and blue above a ph of 8 3.

A ph scale reading of 8 indicates a weak base. Litmus can also be prepared as an aqueous solution that functions similarly. A ph scale reading of 6 indicates a weak acid. In relation to testing acids i recommend that you use blue litmus paper and if the substance you are testing is an acid the blue will change to red.

When red litmus paper is placed into a basic substance it will turn blue. Colorful vector illustration in flat style isolated on white background. Acids turn blue litmus paper red. Neutral litmus paper is purple.

Litmus indicator solution turns red in acidic solutions blue in alkaline solutions and purple in neutral solutions. Bases turn red litmus paper blue. Knowing whether a substance is acidic or basic is only the first step.